Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '06a1f76c91ba47e6466822b79d8078c54f4bcc89bbc2cbdb6d8a09228beb854e' 
  AND token = '5D2CLCUQEYKqefKDA8l32XxMHrcaA+zoTRwlOCsjmM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}